ivanduar,

Click the links below for resolving wireless connection issues.

Dell Networking and Wireless Support Center

Getting Starting and Connecting to a Wireless Network

Hey Ivan.

I've encountered with the same problem, you described. It seems after Microsoft update, my Killer 1535 stopped working with 2.4GHz, but continue with 5GHz. Did Dell Support answer help you somehow ?

Thanks,

Oleh

I fixed problem with my Killer Wireless adapter by changing channel on my 2.4GHz router. Hope, it will help you too. It looks like problem with drivers and not hardware one.

 Hello,

I have a 2018 Dell XPS 15 that I bought in US while there. I had no problem with connecting to 2.4 and 5 mHz routers while there. I have now returned to India and I am experiencing the same problem. The computer does not see my 2.4 mHz router but see other netwroks with no issue. Please clarify what I need to do in order to configure the router so my computer will detect it.

Thanks,

Eric

Amigo, vou teclar em portugues porque já vi que és Brasileiro...

Não mude os canais do seu roteador, os canais mais altos são melhores por ter menos gente usando, logo ajuste seu windows: é um problema de Driver!

In English: The problem is the driver, read: http://support.killernetworking.com/knowledge-base/wi-fi-channels-12-and-13/

How do I fix this problem, how do you change channels on router?